With my crush we did research in the pitch black depth of the sea, it was really scary
Dreams involving water, especially deep water like the sea, often symbolize emotions and the subconscious. The pitch black depth of the sea can represent the unknown aspects of your feelings or situations in your waking life. Since you were with your crush, this may indicate that you are exploring your feelings for them, and possibly confronting fears or uncertainties about that relationship.
The aspect of research suggests a desire for understanding or clarity, indicating that you may be trying to navigate your feelings and the dynamics of your relationship. The fear you experienced in the dream could reflect anxiety about vulnerability, the complexities of romantic feelings, or fears of the unknown in pursuing a deeper connection.
Overall, this dream might signify a journey into your emotions regarding your crush. It encourages you to explore these feelings more openly, despite any fears or challenges you may face.